Evaluation of the Intestinal Microbiota and Bacterial Translocation in Patients With Rheumatoid Arthritis

Inclusion Criteria for RA patients: * The patient was correctly informed * The patient must have given his/her informed and signed consent * The patient must be insured or beneficiary of a health insurance plan * No antibiotic treatments within the 30 days preceding inclusion * Absence of digestive pathology * RA diagnosis made within the past 12 months Exclusion Criteria for RA patients: * The patient has participated in another study within the past 3 months * The patient is under judicial protection, or any kind of guardianship * The patient refuses to sign the consent * It is impossible to correctly inform the patient * The patient is pregnant, parturient, or breastfeeding * The patient has taken antibiotics in the 30 days preceding inclusion * RA was diagnosed more than 12 months ago * Digestive pathology Inclusion Criteria for healthy volunteers (HV): * The HV was correctly informed * The HV must have given his/her informed and signed consent * The HV must be insured or beneficiary of a health insurance plan * Absence of digestive pathology * No antibiotic treatments within the 30 days preceding inclusion * Does not have RA Exclusion Criteria for HVs: * The HV has participated in another study within the past 3 months * The HV is under judicial protection, or any kind of guardianship * The HV refuses to sign the consent * It is impossible to correctly inform the HV * The HV is pregnant, parturient, or breastfeeding * The HV has taken antibiotics in the 30 days preceding inclusion * Digestive pathology * Joint pathology of any kind (including inflammatory pathologies)